Sam Shields, Packers agree to 4-year, $39 million deal

In his fourth season in the league, Shields tied his career high with four interceptions. Shields now has 13 interceptions in 53 games over those four seasons. Last year, he also added 61 tackles and 17 passes defended, both of which were also career highs.

Shields, who will turn 27 in December, will earn $15 million in 2014, which will make him the second-highest paid cornerback behind Tampa's Darrelle Revis ($16 million) in 2014.

As ESPN's Rob Demovsky notes, the Packers will have $22.5 million in salary devoted to Shields and Tramon Williams ($7.5 million) in 2014.

The Packers ranked 24th in the NFL in pass defense (247.25 yards per game allowed) last year.